The caves were our first stop on this trip after flying into El Paso. A few weeks before leaving, we decided that it might be a good idea to reserve some guided cave tours beforehand, but most of the interesting cave tours were already full. We got 2 spots in the more interesting lower caves (which Serena and Ray went on), and two other less interesting short walks in the left hand tunnel, and Kings Palace. By the time we had finished walking through the natural entrance and a circuit around the Big Room, I was feeling quite caved out and didn't enjoy the Kings Palance as much as I should have.